NASA Astronomy Picture of the Day

Mar 2, 2024

Odysseus on the Moon

Methalox rocket engine firing, Odysseus' landing legs absorb first contact with the lunar surface in this wide-angle snapshot from a camera on board the robotic Intuitive Machines Nova-C moon lander. Following the landing on February 22, broken landing legs, visible in the image, ultimately left the lander at rest but tilted. Odysseus' gentle lean into a sloping lunar surface preserved the phone booth-sized lander's ability to operate, collect solar power, and return images and data to Earth. Its exact landing site in the Moon's far south polar region was imaged by NASA's Lunar Reconnaissance Orbiter. Donated by NASA, the American flag seen on the lander's central panel is 1970 Apollo program flight hardware.

https://apod.nasa.gov/apod/astropix.html?

NASA Collects First Surface Science in Decades via Commercial Moon Mission

MAR 01, 2024

For the first time in more than 50 years, NASA was able to collect data from new science instruments and technology demonstrations on the Moon. The data comes from the first successful landing of a delivery through NASA’s CLPS (Commercial Lunar Payload Services) initiative and Artemis campaign.

The six instruments ceased science and technology operations eight days after landing in the lunar South Pole region aboard Intuitive Machines’ Odysseus, meeting pre-launch projected mission operations. Known as IM-1, this was the first U.S. soft landing on the Moon in decades, touching down on Feb. 22, proving commercial vendors can deliver instruments designed to expand the scientific and technical knowledge on the Moon.

Aboard the lunar lander, NASA science instruments measured the radio noise generated by the Earth and Sun. Technology instruments, aided Intuitive Machines in navigating to the Moon and gathered distance and speed (velocity) of the lander as touched down on the lunar surface.

“This mission includes many firsts. This is the first time in over 50 years that an American organization has landed instruments on the surface of the Moon,” said Joel Kearns, deputy association administrator for exploration of NASA’s Science Mission Directorate in Washington. “This mission also provides evidence of the Commercial Lunar Payload Services model, that NASA can purchase the service of sending instruments to the Moon and receiving their data back. Congratulations to the entire Intuitive Machines team and our NASA scientists and engineers for this next leap to advance exploration and our understanding of Earth’s nearest neighbor.”

During transit from Earth to the Moon, all powered NASA instruments received data and completed transit checkouts.

• During descent, the Radio Frequency Mass Gauge and Navigation Doppler Lidar collected data during the lander’s powered descent and landing.

• After landing, NASA payload data was acquired consistent with the communications and other constraints resulting from the lander orientation.

• During surface operations, the Radio-wave Observations at the Lunar Surface of the Photoelectron Sheath and Lunar Node-1 were powered on, performed surface operations, and have received data.

• The Stereo Cameras for Lunar Plume-Surface Studies was powered on and captured images during transit and several days after landing but was not successfully commanded to capture images of the lander rocket plume interaction with the lunar surface during landing.

• The Laser Retroreflector Array is passive and initial estimates suggest it is accessible for laser ranging from the Lunar Reconnaissance Orbiter’s Lunar Orbiter Laser Altimeter to create a permanent location marker on the Moon.

“The bottom line is every NASA instrument has met some level of their objectives, and we are very excited about that,” said Sue Lederer, project scientist for CLPS. “We all worked together and it’s the people who really made a difference and made sure we overcame challenges to this incredible success – and that is where we are at today, with successes for all of our instruments.”

NASA and Intuitive Machines co-hosted a news conference non Feb. 28 to provide a status update on the six NASA instruments that collected data on the IM-1 mission. Mission challenges and successes were discussed during the briefing, including more than approximately 500 megabytes of science, technology, and spacecraft data downloaded and ready for analysis by NASA and Intuitive Machines.

The first images from this historical mission are now available and showcase the orientation of the lander along with a view of the South Pole region on the Moon. Odysseus is gently leaning into the lunar surface, preserving the ability to return scientific data. After successful transmission of images to Earth, Intuitive Machines continues to gain additional insight into Odysseus’ position on the lunar surface. All data gathered from this mission will aid Intuitive Machines in their next two CLPS contracts that NASA has previously awarded.

https://www.nasa.gov/missions/artemis/clps/nasa-collects-first-surface-science-in-decades-via-commercial-moon-mission/

Women’s History Month: Celebrating Women Astronauts 2024

MAR 01, 2024

“A bird cannot fly with one wing only. Human space flight cannot develop any further without the active participation of women.” – Valentina Tereshkova

“If we want scientists and engineers in the future, we should be cultivating the girls as much as the boys.” – Sally Ride

“International cooperation is very necessary. Chinese have a saying, ‘When all the people collect the wood, you will make a great fire.’” – Liu Yang

As of Feb. 29, 2024, 75 women have flown in space. Of these, 47 have worked on the International Space Station as long-duration expedition crewmembers, as visitors on space shuttle assembly flights, as space flight participants, or as commercial astronauts. This article recognizes the significant accomplishments of these women from many nations as well as the pioneering women who preceded them into space. Many other women contributed to the assembly of the station and the research conducted aboard on a daily basis, including those on the ground who served as center directors, managers, flight directors, and in many other roles to pursue the exploration of space. Their achievements will contribute to NASA’s efforts to land the first woman and the first person of color on the Moon and possibly send the first crews to Mars in the coming decades.

The era of women in space began on June 16, 1963, when Soviet cosmonaut Valentina V. Tereshkova launched aboard the Vostok 6 spacecraft. Chosen from a group of five women selected for training, Tereshkova completed a three-day mission and entered the history books as the first woman to orbit the Earth. Nearly 20 years passed before another woman flew in space. In January 1978, NASA announced the selection of 35 new astronauts including six women for the space shuttle program. In response, the Soviet Union secretly selected a group of nine women cosmonauts in 1980. On Aug. 19, 1982, one of these women, Svetlana Y. Savitskaya, launched with her two crewmates aboard Soyuz T-7 for a week-long mission. The next day, they joined the two long-duration resident crewmembers aboard Salyut 7, marking the first time a space station hosted a mixed-gender crew. Ten months later, on June 18, 1983, astronaut Sally K. Ride made history as the first American woman in space, spending seven days aboard space shuttle Challenger during the STS-7 mission.

Savitskaya made history again on July 25, 1984, as the first woman to participate in a spacewalk during her second flight to Salyut 7. Less than three months later, on Oct. 11, Kathryn D. Sullivan completed the first spacewalk by an American woman from space shuttle Challenger during the STS-41G mission. With Ride as one of Sullivan’s crewmates, the flight marked the first time a space crew included two women.

Helen P. Sharman has the distinction as not only the first person from the United Kingdom in space but also the first woman to visit the Russian space station Mir. During her eight-day privately funded Juno mission in May 1991, Sharman conducted a series of life sciences experiments and talked to British schoolchildren. The next month marked the first time that a space crew included three women – NASA astronauts M. Rhea Seddon, Tamara E. Jernigan, and Millie E. Hughes-Fulford – during the STS-40 Spacelab Life Sciences 1 mission.

cont.

https://www.nasa.gov/history/womens-history-month-celebrating-women-astronauts-2024/

Update on Status of NASA’s OSAM-1 Project

Mar 1, 2024

Following an in-depth, independent project review, NASA has decided to discontinue the On-orbit Servicing, Assembly, and Manufacturing 1 (OSAM-1) project due to continued technical, cost, and schedule challenges, and a broader community evolution away from refueling unprepared spacecraft, which has led to a lack of a committed partner. Following Congressional notification processes, project management plans to complete an orderly shutdown, including the disposition of sensitive hardware, pursuing potential partnerships or alternative hardware uses, and licensing of applicable technological developments. NASA leadership also is reviewing how to mitigate the impact of the cancellation on the workforce at NASA’s Goddard Space Flight Center in Greenbelt, Maryland.

https://www.nasa.gov/missions/update-on-status-of-nasas-osam-1-project/

Night-Shining Cloud Mission Ends; Yields High Science Results for NASA

MAR 01, 2024

After 16 years studying Earth’s highest clouds for the benefit of humanity – polar mesospheric clouds – from its orbit some 350 miles above the ground, NASA’s Aeronomy of Ice in the Mesosphere, or AIM, mission has come to an end.

Initially slated for a two-year mission, AIM was extended numerous times due to its high science return. While AIM has faced hurdles over the years – from software hiccups to hardware issues – an incredibly dedicated team kept the spacecraft running for much longer than anyone could have anticipated. On March 13, 2023, the spacecraft’s battery failed following several years of declining performance. Multiple attempts to maintain power to the spacecraft were made, but no further data could be collected, so the mission has now ended.

“AIM was dedicated to studying the atmospheric region that borders between our atmosphere and space,” said AIM mission scientist Diego Janches, of NASA’s Goddard Space Flight Center in Greenbelt, Maryland. “AIM’s help understanding this region has been of critical importance to providing insights on how the lower atmosphere affects space weather.”

Known as night-shining or noctilucent clouds, they are seen at twilight in the summer months, typically at high latitudes near the North and South Poles. Before the mission, scientists knew these types of clouds varied with latitude, season, and solar activity, but didn’t know why. This mission was launched to understand the variations and study why the clouds form and their links to climate change by measuring the thermal, chemical, and other properties of the environment in which the clouds form.

“NASA’s AIM has been an incredibly successful mission,” said Scott Bailey, AIM principal investigator and professor at Virginia Tech. “It has answered core questions that have helped us understand how noctilucent clouds and atmospheric gravity waves vary over time and location.”

Over the years, AIM made many big discoveries. Data from the mission has thus far led to nearly 400 peer-reviewed publications. This includes findings on how these clouds can be created by meteor smoke and water vapor from rocket exhaust, how events near Earth’s surface can trigger changes in the clouds, and how ice high in the atmosphere can cause mysterious radar echoes, which are created in certain regions of the atmosphere during the summer.

As the mission progressed, scientists realized AIM’s data could also be used to study undulations in the air called atmospheric gravity waves. These waves transfer momentum and energy as they travel through the atmosphere. They link weather events at Earth’s surface with atmospheric disturbances that occur far away from the initial event, including in the uppermost part of the atmosphere where they can disrupt GPS signals.

“We’ve had many difficulties, but we’ve still gotten an incredible amount of data from AIM because of our really excellent, heroic, and hardworking team that comes through every time,” Bailey said.

AIM’s first hurdles started only months after launch in 2007, when the telecommunication receiver started to malfunction intermittently. With a clever use of radio signals, the team was able to reprogram the spacecraft to communicate in Morse code, which allowed it to maintain communications even after the receiver stopped working. While communication with the spacecraft became thousands of times slower than planned, AIM was still able to make its measurements and send home 99% of the data it collected.

Shortly thereafter, the spacecraft again encountered a mission-threatening issue. The spacecraft repeatedly sent itself into safe mode, which effectively shut down the spacecraft and required a time-consuming series of tasks to reboot. But again, the engineers were able to upload new software to the spacecraft to circumvent the issue and keep AIM functional. The new software patch has prevented over a thousand such incidents on the spacecraft since.

In 2019, AIM’s battery started to decline, but through great effort and ingenuity, the mission operations team maintained the battery power, enabling the spacecraft to continue returning data. In early 2023, the battery experienced a significant drop-off in performance which meant the spacecraft could not regularly receive commands or collect data. Unfortunately, this hardware issue was not one that could be repaired remotely, and the satellite finally ceased collecting data in March 2023.

“We’re saddened to see AIM reach the end of its lifetime, but it’s been amazing how long it has lasted,” Bailey said. “It’s given us more data and insight into noctilucent clouds and atmospheric gravity waves than we could ever have hoped for.”

https://science.nasa.gov/science-research/heliophysics/night-shining-cloud-mission-ends-yields-high-science-results-for-nasa/